package com.atguigu.lease.common.utils;

import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import io.jsonwebtoken.*;
import io.jsonwebtoken.security.Keys;

import javax.crypto.SecretKey;
import java.sql.Date;
import java.sql.Statement;

public class JWTUtil {

     private  static SecretKey secretKey = Keys.hmacShaKeyFor("A8TEPvGC58hJRHY4jTZUKs5nDnxmFPu4".getBytes());
    public static String createToken(long userId,String username){

        String jwt = Jwts.builder().
                setExpiration(new Date(System.currentTimeMillis() + 3600000))
                .setSubject("LOGIN_USER")
                .claim("userId", userId).claim("username", username)
                .signWith(secretKey, SignatureAlgorithm.HS256)
                .compact();
        return jwt;

    }
    public static Claims parseToken(String token){

        if (token==null){
            throw new LeaseException(ResultCodeEnum.ADMIN_LOGIN_AUTH);
        }

        try{
            JwtParser jwtParser = Jwts.parserBuilder().setSigningKey(secretKey).build();
            Jws<Claims> claimsJws = jwtParser.parseClaimsJws(token);
            return claimsJws.getBody();
        }catch (ExpiredJwtException e){
            throw new LeaseException(ResultCodeEnum.TOKEN_EXPIRED);
        }catch (JwtException e){
            throw new LeaseException(ResultCodeEnum.TOKEN_INVALID);
        }
    }



    public static void main(String[] args) {
        System.out.println(createToken(8L, "18272832069"));
    }
}
